Again taking the final temperature of several towns and subtracting from it, the raw data, we get more of the strange pulsating corrections.
These total correction curves clearly show that the climatologists think that the raw data is as many as 3-5 degrees in error, which is why they correct it that much, yet they tell us that the observations are good enough to measure to the accuracy of a tenth of a degree. I always learned that if you have to make a degree correction, you can't claim that you have tenth of a degree precision.
For Nonymous, please explain why there is a jitter in the error, meaning one must believe that the error is sinusoidal. What causes this sinusoid?